W211 Audio 20 Phone connection

[simonjamesturne]

Does anyone know if it's possible to connect a phone to the Audio 20 CD unit in a W211. The unit has phone buttons but reports 'no phone' when pushed.
Seems odd that Mercedes would have provided this function without any obvious way of enabling it? I know the cars fitted with command can have phones installed using an interface. But what about cars fitted with Audio 20 CD players?

 

[npuk]

They all have the phone buttons. Only the MY09 W211 with NTG2.5 based Audio 20 / Comand has fully bluetooth connectivity built into the headunit.

For pre MY09 with the older NTG1 based unit you need to have phone pre-wire (UHI) to use the phone function. See UHI section: Choosing Bluetooth Cradle for European Mercedes Vehicles

 

[simonjamesturne]

Thanks, seems an expensive option though (£500+) for the kit. I guess it would be cheaper to buy an eBay command 2.5 unit then I'll have Bluetooth available for the phone.

 

[npuk]

If you have UHI then you just need the cradle or bluetooth adapter. Comand Online Ltd :: Mercedes Phone/Bluetooth

If you dont you can install Fiscon Pro or mCar which will give you bluetooth connectivity and work as the factory phone kit does. You wont need a cradle or bluetooth adapter for them. Comand Online Ltd :: Mercedes Phone/Bluetooth :: Phone System Retrofit Kits

Or you can install the newer NTG2.5 based Audio 20 fitted to MY09 W211. It has full bluetooth connectivity built in.